Lantern-globe



(Hommel.) y

I C. J. HIGGINS.

LANTBRN GLOBE.

No. 349,219. Patented sept. 14, la.

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N4 PETERS. Pham-mungmphr, wmmgnm n UNITED STATESr PATENtrf/Qgin.

CHARLES J. HIGGINS, OF HALLO\VELIJ, MAINE.

LANTERN-GLOBE.

SPECIFICATION forming parl: of Letters Patent N0.349,219, datedSeptember 14, 1886.

Application filed May 20, 1886. Serial No. 202,731.

.T all whom, t may concern.-

Be it known that I, CHARLES lllieeins, of Hallowell, county of Kennebec,and State ol` Maine, have invented an Improvement in Lautern-Globes, ofwhich the following description, in connection with the accompanyingdrawings, is a specification, like letters on the drawings representinglike parts.

Prior to my invention it has been attempted to provide a glass globe forlanterns and other illruninating bodies with a iiat side to co-operatewith a reecting-surface; but all such attempts known to me have beenunsuccessful, because of the fact, as I believe, that in the formationof the iiat surface in the mold by blowing, a shoulder has been left atits'jnnetion of the top of the dat side with the main body of the globe.The globe firsty becomes heated at the top, and the heat thencegradually travels downward, and, meeting an arch as a shoulder betweenthe main body and the flattened side, causes such unequal expansion thatthe glass globe is quickly broken at the junction of the flattenedsurface with the main body.

This invention has for its object to provide a globe or chimney having aattened side or surface, with a reiiector so constructed as to throw therays of light at Aan angle with relation to the vertical plane of theglobe, the flattened side being formed, substantially as will bedescribed, to obviate breakage ot' the globe because of unequalexpansion and contraction of the glass.

In accordance with this invent-ion the glass globe is formed with aiiattened side or surface, preferably circular in form, it having,however, a shoulder at its junction with the main body for but a portionof its circumference, preferably the junction of the upper portion ofthe iiattened portion with the main body of the globe being without ashoulderor, in other words, the junction of the top ofthe iiattenedsurface with the main body ot' the globe is without a shoulder or sharpangle of any kind to resist the passage of heat, and consequently theiattened surface may expand uniformly with the main body of the (Nomodel.)

concaved plate polished upon its interior to present a suitablereflecting-surface, and having a flange of varying depth, the ilanges ofthe reliector snugly fitting or embracing the segmental shoulder formedat the junction of the iattened side with the main body, the varyingdepth of the flange causing the reflector to lie at an angle to thesurface of the globe, to thereby divert the rays of light at an angle,and in ,this instance downward. The edge ot' the reflector is turnedoutward, so that when placed in position to embrace the shoulder thecementitious material employed to unite, and ,thereby rigidly connect,the reflector with the globe, may be placed between such outwardlyturnedport-ion or lip ot' the iiauge and the shoulder. Y

.Figure l shows in front elevation a globe embodying this invention, thereflector being removed, Fig. 2, a vertical section oi' Fig. l, taken inthe line x x, the reliector being placed in position; Fig. '3,aright-hand side elevation of Fig. 1, the reflector being applied; Fig.4, an enlarged vertical section ot' a portion of Fig. 2.

Ilhe globe or chimney 'a is herein shown ot suitable shape to be appliedto a lantern of ordinary construction. One side ot' the globe a isformed with a iiattened side, I), preferably of circular i'orni andhaving a plane face. A shoulder, j, of varying depth, is formed at thejunctionot' the iiattcned side with the main body a ot' the globe, thatportion of the shoulder on the dotted line a" a" having the greatestdepth and tapering gradually to the dotted line e z at the lower end ofthe globe, wh ere the shoulder is only ot sufficient depth to give aholding-surface for the reflector c, and the said shoulder tapersupwardly from the line n," x toward the line .e z, so that at thejunction of the top portion of the ilattened surface b and the main bodyof the globe no shoulder or sharp angle is presented. As previouslystated, when a shoulder is formed at t-he juncture oi the top side ofthe globe and the flattened side the globe is liable to fracture, andas. a shoulder partially surrounding the flattened surface givessufficient holdingsurface for the reflector c, to be described, the topportion ofthe flattened surface at its junction with the main bodyisformed without a IOO shoulder, so that at such point a very slightdeviation of the general outline or contour ot the globe is presented.

The .reflector consists of a eoneaved plate or disk, c, of circularshape, and polished upon its interior to present a suitablereflecting-surface. A flange, c, is attached to said coneaved disk c,which is ot' unequal depth and ot' sufficient diameter to embrace theshoulder f of the globe. Ihe edge ol' the Hange e is spun or turnedoutward, as at c', so that when the reflector is placed in position withthe flange thereofembracing the shmilderf ot' the globe an upturned lipis presented, beneath which the ccmentitious material is placed tothereby connect the reflector with the globe,remlering it impervious toair. In practice I have t'ound that this method ot' attaching thereflector to the globe is of especial advantage, as t-he ceinentitiousmaterial is prevented from entering' between the reflectingsurtace c andthe globe or running down or otherwise det'aeing the relleeting-snrtaceto thereby destroy its elticiency.

It will be seen that by providing the reflector with the fiange e ot"unequal depth it may be readily placed in position to present thereflecting-surface c at an'angle with relation to the flattened side Iot` the globe or chimney, to thereby divert the rays ot' light in anygiven direction.

In this instance I have shown the reflector with the deepest portion ot'the flange at the bottom, thereby so positioning' the reflectingsurt'aceas to divert the rays ot' light downward, such position being' ot'especial advantage under ordinary circumstances.

I claiml. As a new article ot' manntacture, a glass `globe having aflattened or coneaved side or surface formed with a shoulder butpartially around it, substantially as described.

2. As a new article ol' malattia-ture, a glass globe having ay flat sideorsurl'ace formed with a shoulder at its junction with the main body.said shoulder extending around the lower portion of' the flattenedsurface and gradually tapering` ott' upon each side at the top,tothereby leave the junction of the top ot' the flattened surfaCe with themain body of the globe without a shoulder or other sharp bend or angle,substantially as described.

3. A globe or chimney having a flattened or concaved side and surrounded'partially by a flange, the upper part ot' the flattened surl'acemeeting the main body ot' the globe without a flange or abrupt shoulder,combined with a reflector attached to the said projection, substantiallyas described.

Ht. A globe or chimney having a flattened side, and shoulderf, ot'various depthsLioining the side with the main body ot'the globe.combined with a reflecting' disk or surface and a flange ot" varying'depth t'or connecting' the said reflecting-disk with the globe, wherebythe said disk is retained atan angle with rela tion to the saidflattened side l) ot'the globe or chimney, substantially as described.

5. A globe or chimney having a flattened side, and shoulder otl varyingdepth, combined with a reflector having a flange to em brace the saidprojecting portion l ol' the globe or chimney, the edge ot' the saidprojecting flange being turned outward to form a lip to permitcementitious material to beinserted between the said lip and theshoulderf, to which it is attached, substantially as described.

In testimony whereof I have signed my name to this specification in thcpresence ot' two snb scribing witnesses.

\Vitncsses:

A. K. PERRY, J'. EDWIN Nrn.

